1. GNSS ionospheric seismology: Recent observation evidences and characteristics
2. GEONET Data(2017) http://datahouse1.gsi.go.jp/terras/terras_english.html Accessed on March 12 2019.
3. Occhipinti G.(2015) “From Sumatra 2004 to Tohoku‐Oki 2011: What we learn about Earthquake and Tsunami detection by ionospheric monitoring ” HDR Dissertation University of Paris Diderot.
4. Komjathy A.(1997) “Global Ionospheric Total Electron Content Mapping Using the Global Positioning System ” Ph.D. dissertation Department of Geodesy and Geomatics Engineering Technical Report No. 188 University of New Brunswick Fredericton New Brunswick Canada 248pp.